“…Lead halide perovskite nanocrystals (PeNCs) have become a promising candidate in the field of optoelectronics owing to their large optical absorption coefficient (10 4 –10 5 cm –1 ), tunable band gap, narrow emission bandwidth, and high photoluminescence quantum yield (PLQY). − The power conversion efficiency (PCE) of the monolithic perovskite/silicon tandem solar cell has already reached 29.15% within a very short period . Meanwhile, multicolor light-emitting diodes (LEDs) and low threshold optical-pumped lasers have been realized with excellent performance. , However, the ionic nature of PeNCs results in a significant drawback of high environmental sensitivity, which limits their practical applications. , Furthermore, up to now, studies have shown that high-temperature, oxygen, moisture, ultraviolet (UV) light exposure, and structural transformation lead to the decomposition of perovskite materials and degrade the device stability. − Therefore, progress in improving the stability of the material without sacrificing its performance is crucial for the development of PeNCs in the future.…”